Make it easier for apps created for Iphone and android to work on Windows devices. Some of
those apps, by not being able to work on Windows, may prevent people from purchasing a
Windows device. When unlocking the phone, the first thing seen should be the start screen, the
person may have an emergency and need to call 911, a delay may end a life.

Unified email inbox, just like on WP8. Ability to lump all of my personal email accounts into one interface. Ability to keep my work email separated. I also love the ability to pin specific folders to my start screen. It makes getting to those folders so easy.

Personal App Management. A while ago I used Lists on App Social to personally mark/remember any apps (e.g, interesting app I wanna take a closer look at a later time; apps already tested with high potential but not yet meeting my requirements; many other for me useful remarks to apps). A more practical feature for such "app-hints" is in my eyes the ability to set lists is set any personally defined tags on apps directly in the store and search/filter for them.